Mathematical Model for Prediction and Optimization of Weld Bead Geometry in All-Position Automatic Welding of Pipes

Metals

Yaoyong Yi¹  Zexin Jiang²  Yanxin Cui³  Shuwan Cui³  Yonghua Shi³  Baoyi Liao³ 

[1] Guangdong Welding Institute (China-Ukraine E. O. Paton Institute of Welding), Guangzhou 510650, China;Guangzhou Shipyard International Company Limited, Guangzhou 511462, China;School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China;

关键词: all-position automatic tungsten inert gas (TIG) welding;    optimal welding parameters;    response surface method (RSM);    lap joint;    weld bead geometry;   

DOI  :  10.3390/met8100756

来源: DOAJ

【 摘 要 】

In this study all-position automatic tungsten inert gas (TIG) welding was exploited to enhance quality and efficiency in the welding of copper-nickel alloy pipes. The mathematical models of all-position automatic TIG weld bead shapes were conducted by the response surface method (RSM) on the foundation of central composition design (CCD). The statistical models were verified for their significance and adequacy by analysis of variance (ANOVA). In addition, the influences of welding peak current, welding velocity, welding duty ratio, and welding position on weld bead geometry were investigated. Finally, optimal welding parameters at the welding positions of 0° to 180° were determined by using RSM.

【 授权许可】

Unknown